MAA 3200 Midterm: MAA 3200 FIU Exam 103k
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The average grade was about 70/100, which is normal-to-good. You can use the scale in the syllabus for now. The true-false had the lowest average, at about 60 per cent. The proofs were graded based mainly on correctness and clarity [did you follow a standard strategy ? state your assumptions clearly ? skip steps ? use good notation ?] 1a): if a and b\c are disjoint then a b c. Ets a b c. let x a b. ets x c. Since x a and a is disjoint from b\c, x 6 b\c. It is false that x b and x 6 c. but x b, so x 6 c is false. I took a slight shortcut with the de nition of disjoint here. Notice that i used a sequence of short sentences combined into paragraph form. Try not to let your sentences run on with too many which means or if - then phrases.
